In contrast, conditions are expected to be drier than usual in large parts of Western Australia.
Coastal New South Wales, most of Victoria, large areas of Queensland, and northern and eastern Tasmania are all predicted to get above-average rainfall.
The last really big flood in the Maribyrnong area was in 1974.
The Bureau of Meteorology has forecast a wet summer for the east coast. Pictured: Maribyrnong earlier this month. (9News)

This in turn “has the potential to lead to widespread flooding” across an already drenched east coast.

“Above-average rainfall also increases the risk of landslides and tree falls in areas of steep terrain and very wet soils,” the BoM said.

There is a high chance of hot nights across the tropical north and in some southern areas, including Tasmania.

Hundreds of thousands of megalitres had to be released from Wyangala Dam near Forbes during the floods. (Nick Moir)

Meantime, cooler days are expected for New South Wales, part of southern Queensland and into Victoria.

There is always a bushfire risk in southern Australia in summer, and above-average rainfall can increase the risk of bushfires, the BoM said.

The Summer Bushfire Outlook will be released on November 29.

Incredible aerial images show extent of Condobolin flooding

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